Jan Albertus van Blerk
Jan Albertus was born on August 1st, 1908.  He died at the age of 78 on September 13th, 1986.

 Martha Helena Cloete (van Blerk)
Martha Helena was born on August 17th, 1911.  She died at the age of 88 on August 6th, 2000.

 Jacobus Adriaan Rozier van Blerk
Jacobus Adriaan Rozier was born on December 4th, 1937.

 Hendrik Abraham van Blerk
Hendrik Abraham was born on March 14th, 1941.

 Jan Albertus van Blerk
Jan Albertus was born on October 22nd, 1946.  He died at the age of 31 on December 17th, 1977.